Transmitters
Before we discuss transmitters it is worth considering the difference between sensors and transmitters.
We consider a sensor to be the device that reacts to the change in
physical change and converts it into some basic form of electronic
change. Transmitters usually contain a sensor and all the relevant
electronics to convert the change in sensor signal to a signal that can
be transmitted to the real world. Transmitter refers therefore to any
device that outputs a signal that is representative of the measurement.
Eg. a device that measures pressure and outputs a signal that is
representative of the pressure could be considered to be a pressure
transmitter. |